>>3803398Also wanted to say, that getting a great finder in a pre-M era is impossible, the Contax/Kiev cameras were as good as it gets and the benchmark before M3 was released. Of course the M3 was a big advancement.
In any case, if you want a nice finder you should check at RFs made after the '60s-'70s. Usually Japanese. Also there was a Kodak Retina with a nice finder, but don't remember the model, their numbering is a bit insane.
A standout among others is the Konica III-A. Easily the best fixed lens rf viewfinder by a long shot. On the same level as Leica M finders, if not better.